John David Cahoy, M.D./PH.D.
Pediatric Orthopaedic Surgery Physician · Concord, MA
John David Cahoy, M.D./PH.D. is a pediatric orthopaedic surgery physician with a practice address in Concord, Massachusetts, and NPI 1952626350, issued on Mar 30, 2010. Check the license (Massachusetts 266960, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- John David Cahoy
- Credential
- M.D./PH.D.
- Primary taxonomy
- Pediatric Orthopaedic Surgery Physician 207XP3100X
- License number
- 266960 MA
Self-reported in NPPES; status is on the state search - Practice location
- 54 Baker Avenue Ext, Concord, MA 01742
- Phone
- (978) 369-5391
- Enumerated
- Mar 30, 2010
- Record last updated
- Apr 22, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (978) 369-7661
- Medicare enrollment
- Enrolled (PECOS I20180215000195); accepts Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest pediatric orthopaedic surgery physician records → All 24 in Massachusetts → Look up another NPI →
Also registered at 54 Baker Avenue Ext
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kristen Corcoran, PA-CPhysician Assistant1366003865
- Ashley CotnamPhysician Assistant1932797818
- Laura Doyon, MDSurgery Physician1235363342
- Donald Driscoll, M.D.Orthopaedic Surgery Physician1013983907
- Michael Fattal, M.D,Facial Plastic Surgery Physician1679756704
- Dean Howard, M.D.Orthopaedic Surgery Physician1083687511
Verify John David Cahoy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 266960Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $34.82
2 payments; by number, the most common kind was food and beverage; the largest payer was Pacira Pharmaceuticals Incorporated. The 503 providers of this specialty with any payment received $5,092.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Orthopedic Affiliates IncConcord, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John David Cahoy among 24 pediatric orthopaedic surgery physician records in Massachusetts
John David Cahoy, M.D./PH.D. is one of 24 pediatric orthopaedic surgery physician records with a practice address in Massachusetts. 50% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 46% of them.
- NPI issued2010 · 46% of these records are older, 50% newer
- In a Medicare fileYes · 50% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Record last updated2020 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XP3100X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Orthopaedic Surgery Physician providers in Massachusetts
There are 24 pediatric orthopaedic surgery physician records in Massachusetts.
All 24 in Massachusetts → Every provider in Concord → Pediatric Orthopaedic Surgery Physician nationwide →
The 8 pediatric orthopaedic surgery physician records with the nearest ZIP codes
- Rebecca Siegel, MDBoston, MA 021141043605033
- Donald Bae, MDBoston, MA 021151831154111
- Craig Birch, M.D.Boston, MA 021151104263565
- Grant Hogue, MDBoston, MA 021151619107349
- Mathilde Hupin DebeurmeBoston, MA 021151992134662
- Lawrence Karlin, MDBoston, MA 021151235186263
- James Kasser, MDBoston, MA 021151801836887
- Mininder Kocher, MDBoston, MA 021151164451597
Common questions
What is John David Cahoy, M.D./PH.D.'s NPI number?
John David Cahoy, M.D./PH.D.'s National Provider Identifier (NPI) is 1952626350, issued on Mar 30, 2010. An NPI identifies a provider in billing; it is not a license.
Where is John David Cahoy, M.D./PH.D. located?
The NPPES record lists a practice address at 54 Baker Avenue Ext, Concord, MA, 01742. Phone: (978) 369-5391. Providers update this record themselves, so call before visiting.
How can I verify John David Cahoy, M.D./PH.D.'s license?
NPPES lists Massachusetts license number 266960, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.